The Unseen — T.C. McMullen

Her name is Ravyn. Black-onyx eyes swirl jade and sapphire; fear nothing stance and commanding presence hold the attention of all. The moment Kyle D'Arcy notices this striking woman hidden in shadow, he knows she's involved with secrets he's desperate to unearth. Kyle's search plunges him into a nightmare fraught with lethal diseases--where allies may also be a force to fear. Ravyn proves to be his savior. But as the battle against an adversary set on destroying humanity spins wildly into the unknown, will he become hers?